Blanchard, Ken, author
Bareett Koehler, 2011
Buku Teks
Christiansen, Rich, 1965-, author
McGraw-Hill, 2012
Buku Teks
Christiansen, Rich, 1965-, author
McGraw-Hill, 2012
Buku Teks
Muinzer, Genevieve, author
Routledge and Kegan Paul, 1987
Buku Teks
Engel, Baverly, author
John Wiley & Sons, 2004
Buku Teks